------------[ cut here ]------------
WARNING: CPU: 0 PID: 4895 at fs/btrfs/block-group.c:3505 do_chunk_alloc fs/btrfs/block-group.c:3505 [inline]
WARNING: CPU: 0 PID: 4895 at fs/btrfs/block-group.c:3505 btrfs_chunk_alloc+0xb2e/0xf40 fs/btrfs/block-group.c:3728
Modules linked in:
CPU: 1 PID: 4895 Comm: kworker/u4:8 Not tainted 5.15.182-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Workqueue: events_unbound btrfs_async_reclaim_metadata_space

RIP: 0010:do_chunk_alloc fs/btrfs/block-group.c:3505 [inline]
RIP: 0010:btrfs_chunk_alloc+0xb2e/0xf40 fs/btrfs/block-group.c:3728
Code: 00 00 e8 a5 29 19 fe 4c 89 f3 0f 1f 44 00 00 e8 98 29 19 fe eb 16 e8 91 29 19 fe 48 c7 c7 40 d5 4c 8a 44 89 ee e8 62 d3 37 06 <0f> 0b 4c 89 ff 48 c7 c6 40 e3 4c 8a ba b1 0d 00 00 eb 74 e8 6a 29
RSP: 0018:ffffc90005236b80 EFLAGS: 00010246
RAX: 1bdbb47859309700 RBX: ffff888024071800 RCX: ffff888029361dc0
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000005 R08: dffffc0000000000 R09: ffffed1017204f24
R10: ffffed1017204f24 R11: 1ffff11017204f23 R12: dffffc0000000000
R13: ffffffffffffffe4 R14: ffff888024071800 R15: ffff8880718289a0
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000002a3000 CR3: 000000002baf7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 find_free_extent_update_loop fs/btrfs/extent-tree.c:4039 [inline]
 find_free_extent+0x2ba5/0x3560 fs/btrfs/extent-tree.c:4402
 btrfs_reserve_extent+0x20a/0x530 fs/btrfs/extent-tree.c:4483
 cow_file_range+0x57f/0xb50 fs/btrfs/inode.c:1181
 btrfs_run_delalloc_range+0x292/0x1490 fs/btrfs/inode.c:2018
 writepage_delalloc+0x14c/0x360 fs/btrfs/extent_io.c:3802
 __extent_writepage+0x51f/0xb00 fs/btrfs/extent_io.c:4108
 extent_write_cache_pages fs/btrfs/extent_io.c:5030 [inline]
 extent_writepages+0x9c4/0x13b0 fs/btrfs/extent_io.c:5157
 do_writepages+0x48d/0x6d0 mm/page-writeback.c:2386
 filemap_fdatawrite_wbc+0x1eb/0x240 mm/filemap.c:400
 start_delalloc_inodes+0x718/0xb20 fs/btrfs/inode.c:10127
 btrfs_start_delalloc_roots+0x596/0x800 fs/btrfs/inode.c:10206
 shrink_delalloc fs/btrfs/space-info.c:538 [inline]
 flush_space+0x58e/0xc50 fs/btrfs/space-info.c:646
 btrfs_async_reclaim_metadata_space+0x26f/0x330 fs/btrfs/space-info.c:953
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>